chunwan/uni_modules/c-svga/node_modules/svgaplayerweb/README.md

# SVGAPlayer-Web

Language: [中文](README.zh.md)

SVGAPlayer 现已支持在微信小程序播放动画，详情请[参阅](https://github.com/yyued/SVGAPlayer-Web/tree/mp)。

## News

* **[Lite Version](https://github.com/svga/SVGAPlayer-Web-Lite)**
* 2.3.0 - Add audio support.

## Can I Use

SVGAPlayer 2.0.0 only supports below browsers.

* Edge / IE 6+
* Safari / Chrome
* iOS 6.0+ / Android 4.0+

SVGAPlayer 2.0.0 also supports below Game Engines.

* CreateJS [Usage](CreateJS.README.md)
* LayaBox [Usage](LayaBox.README.md)

## Install

### Prebuild JS

1. Add ```<script src="https://cdn.jsdelivr.net/npm/svgaplayerweb@2.3.1/build/svga.min.js"></script>``` to your.html

### NPM

1. ```npm install svgaplayerweb --save```
2. Add ``` require('svgaplayerweb') ``` to ```xxx.js```

### IE6 ~ IE9

* IE6+ only supports 2.x format.
* You couldn't use npm to install SVGA library.

1. Add [SVGAPlayerWeb.swf](https://github.com/yyued/SVGAPlayer-Web/blob/master/tests/SVGAPlayerWeb.swf) to your.html locate directory.
2. Add following code to your.html

```
<!--[if lt IE 10]> 
    <script src="../build/svga.ie.min.js"></script>
<![endif]-->
<!--[if gte IE 10]><!-->
    <script src="../build/svga.min.js"></script>
<!--<![endif]-->
```

### Audio support

If your need to play audios, add ```howler.min.js``` to your html.

```html
<script src="https://cdn.jsdelivr.net/npm/howler@2.0.15/dist/howler.core.min.js"></script>
```

Notice: audio plays needs browser support, some browser requires user interaction before playing.

### SVGA-Format 1.x support

Both Prebuild & NPM, if you need to support SVGA-Format 1.x, add JSZip script to html.

```html
<script src="//s1.yy.com/ued_web_static/lib/jszip/3.1.4/??jszip.min.js,jszip-utils.min.js" charset="utf-8"></script>
```

## Usage

### Load Animation Mannally

You may create Player and Parser by yourself.

1. Add Div Tag.

```html
<div id="demoCanvas" style="styles..."></div>
```

2. Load Animation

```js
var player = new SVGA.Player('#demoCanvas');
var parser = new SVGA.Parser('#demoCanvas'); // Must Provide same selector eg:#demoCanvas IF support IE6+
parser.load('rose_2.0.0.svga', function(videoItem) {
    player.setVideoItem(videoItem);
    player.startAnimation();
})
```

### Load Animation Automatically

Assign canvas element properties as below.

```html
<div src="rose_2.0.0.svga" loops="0" clearsAfterStop="true" style="styles..."></div>
```

Animation will play after Web-Page onload.

### Replace Animation Images Dynamically

You can replace specific image by yourself, ask your designer tell you the ImageKey.

```
player.setImage('http://yourserver.com/xxx.png', 'ImageKey');
```

### Add Text on Animation Image Dynamically

You can add text on specific image, ask your designer tell you the ImageKey.

```
player.setText('Hello, World!', 'ImageKey');
```

```
player.setText({ 
    text: 'Hello, World!', 
    family: 'Arial',
    size: "24px", 
    color: "#ffe0a4",
    offset: {x: 0.0, y: 0.0}
}, 'ImageKey'); // customize text styles.
```

## Classes

### SVGA.Player

You use SVGA.Player controls animation play and stop.

#### Properties

* int loops; - Animation loop count, defaults to 0 means infinity loop.
* BOOL clearsAfterStop; - defaults to true, means player will clear all contents after stop.
* string fillMode; - defaults to Forward，optional Forward / Backward，fillMode = Forward，Animation will pause on last frame while finished，fillMode = Backward , Animation will pause on first frame.

#### Methods

* constructor (canvas); - first params could be '#id' or CanvasHTMLElement
* startAnimation(reverse: boolean = false); - start animation from zero frame.
* startAnimationWithRange(range: {location: number, length: number}, reverse: boolean = false); - start animation in [location, location+length] frame range.
* pauseAnimation(); - pause animation on current frame.
* stopAnimation(); - stop animation, clear contents while clearsAfterStop === true
* setContentMode(mode: "Fill" | "AspectFill" | "AspectFit"); - Specific Scale Mode
* setClipsToBounds(clipsToBounds: boolean); - Clips if image render out of box.
* clear(); - force clear contents.
* stepToFrame(frame: int, andPlay: Boolean); - stop to specific frame, play animation while andPlay === true
* stepToPercentage(percentage: float, andPlay: Boolean); - stop to specific percentage, play animation while andPlay === true
* setImage(image: string, forKey: string, transform: [a, b, c, d, tx, ty]); - Replace Animation Images Dynamically, transform is optional, transform could adjust replacing image.
* setText(text: string | {text: string, family: string, size: string, color: string, offset: {x: float, y: float}}, forKey: string); - Add Text on Animation Image Dynamically
* clearDynamicObjects(); - clear all dynamic objects.

#### Callback Method
* onFinished(callback: () => void): void; - call after animation stop.
* onFrame(callback: (frame: number): void): void; - call after animation specific frame rendered.
* onPercentage(callback: (percentage: number): void): void; - call after animation specific percentage rendered.

### SVGA.Parser

You use SVGA.Parser load VideoItem from remote or Base64 string.

Only Cross-Domain allow files could be loaded.

If you eager to load resources from Base64 or File, deliver as ```load(File)``` or ```load('data:svga/2.0;base64,xxxxxx')```.

#### Methods

* constructor();
* load(url: string, success: (videoItem: VideoEntity) => void, failure: (error: Error) => void): void;

## Issues

### Android 4.x Breaks

As known, some Android OS lack Blob support, add Blob Polyfill by yourself.

```
<script src="//cdn.bootcss.com/blob-polyfill/1.0.20150320/Blob.min.js"></script>
```